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Distributed Fiber Optic Sensors

DFOS Sensor

Distributed Fiber Optic Sensor: DFOS Sensor
  • Distributed Fiber Optic Sensor: DFOS Sensor
  • DFOS Sensor components and core diameters.

The DFOS Sensor, with a monolithic core of specially designed composite material, provides accurate strain measurement over its entire length and has the best strain transfer currently available. It is ideally suited for detecting and analyzing cracks in concrete. The sensor can be embedded in new structures (concrete or soil) or installed on the surface of existing structures. The braided outer surface improves the bonding properties and interaction with the monitored material.

The lightweight sensor will not affect the behavior of the structure being monitored due to its minimal stiffness and a small bending radius, which helps ensure easy installation in nearly any shape. The DFOS Sensor is analogous to the nerves in the human body: invisible, but essential to ensure adequate safety and response to even the smallest threats.

Specifications

Strain Resolution
1 µε
Strain Range
±4% (both in compression and tension)
Elastic Modulus
3 GPa
Core Material
PLFRP (polyester fibers + epoxide)
Operating Temperature¹
−20 °C to +80 °C
Sensor Diameter²
ø5 mm, ø3 mm, ø2 mm
Sensor Length³
up to 2 km

¹Extended temperature range available on request.

²Other diameters available on request.

³Sensors can be connected in series.

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.

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